red light cams are an increasingly important issue because many counties are turning to these to raise big money.
Some were caught reducing the yellow light time below state ordered minimum and had to refund hundreds in thousands in fines
Red light cameras almost exclusively have been put in for revenue generation rather than helping traffic flow or making things safer.
If anything red light cameras increase accidents by either encouraging speeding across the intersection or slamming on the breaks before the intersections, and causing drivers to increase speed to get through the intersection for fear of getting a ticket, increasing the number of accidents. Plus at higher rates of speed the accidents cause more damage.
As I have mentioned the best place to put these are on dedicated left turn lanes that get their own arrows, but ONLY during rush hours. This would quickly end the practice of cars that are 5-6 back continuing to turn after losing the arrow 10-15 seconds prior.